45911027
9781357955939
Charles Guilford Burnham is the author of 'A New System of Arithmetic, on the Cancelling Plan: Embracing the Rules of the Three, Single and Double, Direct and Inverse; Barter; Loss and Gain; ... of Currencies; Interest: And All Proportional', published 2016 under ISBN 9781357955939 and ISBN 1357955936.
[read more]